In such cases, you may need to repair waterproofing, sealing composition and / or defective joints filled with mortar. You should carefully check the wall sockets, the roof, gutters and downspouts. Existing cracks should be repaired as, for example, silicone sealant. It is recommended to use silicone sealants, acrylic or water-based, which are easy to apply and paint, and which have the lowest rates of shrinkage and good dirt-repellent properties. Excessively porous brick be sealed brick, especially the old and weathered, can be highly porous and absorb moisture quickly. To avoid this, the surface should be primed sealing composition for masonry. Thanks to the exterior paint sealant will be absorbed evenly and look more uniform in color and tone. Acrylic latex sealant compositions are well suited thanks to the reliable adhesion to the brick surface.

Use of the sealant will also help to reduce seepage salting out with water through the brickwork. If the wet and located in the shadow of a brick came moss recommend you to use conventional herbicides. Before applying the herbicide must be moistened with clean water so that the drug is not absorbed into it, because chemical compounds in herbicides contain soluble substances that may contribute to salting or enter into undesirable reactions with the paint. After applying the product, remove with a stiff brush and rinse the wall. If the brick has been previously painted, the surface preparation should be perform a number of operations. Mold must be completely removed with an aqueous solution of bleach in a ratio of one to three, and the surface thoroughly with clean water.

Stratified, cracked, crumbling or swollen paint should be removed with a wire brush or manual actuation. As the swelling, like salting, may be due to the presence of water in the masonry, should determine the source of its occurrence and to appropriate action. Speaking about the choice of paint, Paint Quality Institute, the company ‘Rohm and Haas’ recommends that you use high quality 100% acrylic latex paint for several reasons, one of which is permeability.